Sewage purifier based on biofilm process

Abstract

The invention relates to the field of sewage purification, in particular to a sewage purifier based on a biofilm process, which comprises a sewage purification tank, a rotating wheel, a guide wheel I, glass fiber cloth, a cultivation frame and the like, the sewage purification tank is rotationally connected with a rotating wheel; the sewage purification tank is rotationally connected with a guide wheel I; the sewage purification tank is rotationally connected with a guide wheel II; all the rotating wheels and the guide wheels I are jointly wound with glass fiber cloth; the sewage purification pool is fixedly connected with a cultivation frame, and the glass fiber cloth penetrates through the cultivation frame. Microorganisms newly added to the glass fiber cloth are cultivated into a state of forming a biological membrane through the cultivation frame, and the glass fiber cloth rotates anticlockwise, so that the glass fiber cloth newly entering the sewage purification tank each time has a relatively good sewage purification effect; the problem that in the prior art, a soft membrane base material newly added with microorganisms cannot achieve the purification effect after a biological membrane is formed is avoided.

Description

Technical Field

[0001] The invention relates to the field of sewage purification, and in particular to a sewage purifier based on a biofilm method. Background Art

[0002] The biofilm method is a technology used for sewage treatment and wastewater treatment. It uses the biofilm formed by microbial communities attached to the surface of fixed media to decompose and transform organic matter and nutrients in sewage. A self-circulating biofilm denitrification sewage treatment device is disclosed in the Chinese patent with publication number CN115340195A. The device can conveniently roll up the soft film substrate through a winding roller, which is conducive to the timely and convenient circulation of the bio-base after the bio-base is consumed. However, after adding new microorganisms, the microorganisms that can be directly attached to the soft film substrate are limited, and biofilms cannot be directly formed on the soft film substrate. The soft film substrate with newly added microorganisms cannot achieve the purification effect after the formation of biofilms, so that the purification effect of sewage is poor during the period from the addition of new microorganisms to the formation of biofilms, resulting in a longer time for sewage purification. In the existing sewage purification process, sewage is usually circulated through a circulation pump to enhance the comprehensiveness of the contact between sewage and the biofilm. However, when the microorganisms are newly added, the adhesion between the newly added microorganisms and the soft film substrate is relatively small. Therefore, the circulating sewage will flush the microorganisms on the soft film substrate, resulting in a gap in the microbial layer of the soft film substrate. It takes a certain amount of time for the microorganisms to reproduce and fill the gap. Therefore, it takes a longer time to form a biofilm, further reducing the sewage purification effect. Summary of the invention

[0003] In order to overcome the disadvantage that the soft film substrate of newly added microorganisms cannot achieve the purification effect after the formation of biofilm, resulting in poor purification effect on sewage during the period from the addition of new microorganisms to the formation of biofilm, which leads to the need to spend a longer time to purify sewage, the present invention provides a sewage purifier based on the biofilm method.

[0004] The technical scheme is as follows: a sewage purifier based on the biofilm method, including a sewage purification tank; the sewage purification tank is provided with a water inlet, and the water inlet is connected to an external sewage conveying device, the sewage purification tank is provided with a water outlet, and the water outlet is connected to an external water pump, the sewage purification tank is provided with two circulation ports, and the two circulation ports are respectively connected to the drain port and the water inlet of the circulation pump, and a water quality detector is provided at the right end of the sewage purification tank; it also includes a rotating wheel, a guide wheel I, a glass fiber cloth, a cultivation frame, a motor I, a guide wheel II and a cleaning component; the sewage purification tank is rotatably connected to the rotating wheel; the sewage purification tank is fixedly connected to the motor I, and the output shaft of the motor I is fixedly connected to the rotating wheel; the sewage purification tank is rotatably connected to a plurality of guide wheels I, and all the guide wheels I are distributed in a W shape; the sewage purification tank is rotatably connected to the guide wheel II; all the rotating wheels, guide wheels I and guide wheels II are commonly wound with glass fiber cloth; the sewage purification tank is fixedly connected to the cultivation frame, and the glass fiber cloth passes through the cultivation frame; the sewage purification tank is connected to the cleaning component.

[0005] Optionally, the cleaning component includes a water spray plate, a cleaning roller and a motor II; the sewage purification tank is provided with a cleaning part, and a drain outlet is opened on the cleaning part; the cleaning part is fixedly connected to the water spray plate, and a plurality of high-pressure nozzles are provided at the upper and lower ends of the water spray plate, and the water spray plate is connected to an external water pump, and the water spray plate is located inside the ring formed by the winding of the glass fiber cloth; the cleaning part is rotatably connected to a plurality of cleaning rollers, and the cleaning rollers are located outside the ring formed by the winding of the glass fiber cloth, and the positions of all cleaning rollers and the water spray plate correspond; the cleaning part is fixedly connected to a plurality of motors II, and the output shaft of motor II is fixedly connected to an adjacent cleaning roller.

[0006] Optionally, the glass fiber cloth is provided with a plurality of through holes.

[0007] Optionally, the circulation port on the left is provided with a diverter pipe, and the diverter pipe is connected to the circulation port on the left; a water spray port is provided at the upper end of the cultivation frame, and the cultivation frame is provided with a hollow shape, and the diverter pipe is connected to the cultivation frame, and the inner lower side surface of the cultivation frame is provided to be inclined toward the lower left, and the cultivation frame is provided with several discharge ports at the left end.

[0008] Optionally, an inlet is provided at the right end of the cultivation frame, and an outlet is provided at the left end of the cultivation frame, and the inlet is in contact with the glass fiber cloth, and the width of the outlet is greater than the thickness of the glass fiber cloth.

[0009] Optionally, it also includes guide blocks; a plurality of guide blocks are arranged on the front and rear sides of the glass fiber cloth; and the guide wheel I is provided with a guide portion, and the diameter of the guide portion is larger than the diameter of the middle portion of the guide wheel I.

[0010] Optionally, a baffle is also included; a plurality of baffles are fixedly connected to the sewage purification tank, and the baffles are all located between the glass fiber cloth and the sewage purification tank, and the baffles are in contact with the glass fiber cloth.

[0011] Optionally, it also includes a rubber strip and a scraper; the guide block is provided with a toggle portion; the sewage purification tank is slidably connected to the rubber strip, and a plurality of grooves are provided on the rubber strip; the right end of the sewage purification tank is fixedly connected to the scraper, and the scraper is in contact with the rubber strip, and the scraper is arranged to be hollow, and the scraper is connected to an external suction device.

[0012] Optionally, the lower end of the scraper is set to be a sharp angle.

[0013] Optionally, a partition is also included; the sewage purification tank is fixedly connected with the partition, and the partition is located between the scraper and the water outlet.

[0014] The beneficial effects are as follows: the present invention cultivates newly added microorganisms on the glass fiber cloth into a state of forming a biofilm through the cultivation frame, and the glass fiber cloth rotates counterclockwise, so that each time the glass fiber cloth newly enters the sewage purification tank, it will have a good sewage purification effect, avoiding the problem that the soft film substrate of the newly added microorganisms in the prior art cannot achieve the purification effect after the biofilm is formed, so that the sewage purification effect is poor during the period from the newly added microorganisms to the formation of the biofilm, resulting in a longer time for sewage purification; The present invention provides organic matter and nutrients for newly added microorganisms on the glass fiber cloth by spraying sewage on the glass fiber cloth, so that the newly added microorganisms on the glass fiber cloth are subjected to extremely low impact of water flow, thereby avoiding direct cultivation of the newly added microorganisms in the sewage purification tank, which would be affected by the water flow in the sewage purification tank; The present invention guides the glass fiber cloth through the guide block, so that the guide wheel I does not need to contact the glass fiber cloth, thereby avoiding the problem that the guide wheel I squeezes the glass fiber cloth, causing part of the biofilm on the glass fiber cloth to fall off, thereby reducing the biofilm and reducing the purification effect of the biofilm on the glass fiber cloth on sewage. The upper side of the rubber strip of the present invention catches the fallen sludge, and drives the rubber strip to rotate through the toggle portion, and then the sludge on the upper side of the rubber strip is scraped off, and the sludge on the left side of the scraper is sucked away through the suction groove on the left side of the scraper, thereby completing the sludge cleaning, thereby avoiding the problem that the staff needs to disassemble most of the parts in the sewage purification tank when cleaning the bottom of the sewage purification tank, which makes cleaning difficult for the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the first viewing angle structure of the sewage purifier based on the biofilm method disclosed in the present invention; Figure 2 A schematic diagram of the second viewing angle structure of the sewage purifier based on the biofilm method disclosed in the present invention; Figure 3A cross-sectional view of a sewage purification tank disclosed by the sewage purifier based on the biofilm method of the present invention; Figure 4 A cross-sectional view of a cultivation frame disclosed in the sewage purifier based on the biofilm method of the present invention; Figure 5 It is a schematic diagram of the combined structure of the sewage purification tank, guide wheel I, glass fiber cloth, guide block and baffle disclosed in the sewage purifier based on the biofilm method of the present invention; Figure 6 It is a structural schematic diagram of the guide wheel I disclosed in the sewage purifier based on the biofilm method of the present invention; Figure 7 It is a schematic diagram of the combined structure of the sewage purification tank, rubber strip, scraper and partition disclosed in the sewage purifier based on the biofilm method of the present invention; Figure 8 The present invention is a schematic diagram of the combined structure of a rotating wheel, a water spray plate and a cleaning roller disclosed in the sewage purifier based on the biofilm method.

[0016] Markings in the accompanying drawings: 1-sewage purification tank, 2-rotating wheel, 3-guide wheel I, 4-glass fiber cloth, 5-cultivation frame, 6-motor I, 7-guide wheel II, 101-water spray plate, 102-cleaning roller, 103-motor II, 201-guide block, 202-baffle, 301-rubber strip, 302-scraper, 303-partition, 1001-water inlet, 1002-diversion pipe, 1003-water outlet, 1004-cleaning part, 1005-circulation port, 3001-guide part, 5001-inlet, 5002-outlet, 5003-microorganism inoculation plate, 20101-sliding part. DETAILED DESCRIPTION

[0017] The preferred technical solutions of the present invention are described in detail below with reference to the accompanying drawings.

[0018] Example 1 A wastewater purifier based on biofilm method, such as Figure 1-Figure 6 and Figure 8 As shown, a sewage purification tank 1 is included; the sewage purification tank 1 is provided with a water inlet 1001, and the water inlet 1001 is communicated with an external sewage conveying device, the sewage purification tank 1 is provided with a water outlet 1003, and the water outlet 1003 is communicated with an external water pump, the sewage purification tank 1 is provided with two circulation ports 1005, and the two circulation ports 1005 are respectively communicated with the drain port and the water inlet of the circulation pump, and a sewage detector is provided at the right end of the sewage purification tank 1; It also includes a rotating wheel 2, a guide wheel I3, a glass fiber cloth 4, a cultivation frame 5, a motor I6, a guide wheel II7 and a cleaning component; the right end of the sewage purification tank 1 is rotatably connected to the rotating wheel 2; the sewage purification tank 1 is fixedly connected to the motor I6, and the output shaft of the motor I6 is fixedly connected to the rotating wheel 2; the sewage purification tank 1 is rotatably connected to seven guide wheels I3, and all the guide wheels I3 are distributed in a W shape; the sewage purification tank 1 is rotatably connected to the guide wheel II7; all the rotating wheels 2, guide wheels I3 and guide wheels II7 are commonly wound with a glass fiber cloth 4, and the sewage is purified by microorganisms attached to the glass fiber cloth 4; the sewage purification tank 1 is fixedly connected to the cultivation frame 5, and the glass fiber cloth 4 passes through the cultivation frame 5, and the newly added microorganisms to the glass fiber cloth 4 are cultivated by the cultivation frame 5; the sewage purification tank 1 is connected to the cleaning component, and the aged biofilm on the glass fiber cloth 4 is removed by the cleaning component.

[0019] The cleaning assembly includes a water spray plate 101, a cleaning roller 102 and a motor II 103; the sewage purification tank 1 is provided with a cleaning part 1004, and a drainage port is opened on the cleaning part 1004; the cleaning part 1004 is fixedly connected with the water spray plate 101, and ten high-pressure nozzles are arranged at the upper and lower ends of the water spray plate 101, and the water spray plate 101 is connected with an external water pump, and the water spray plate 101 is located inside the ring formed by the winding of the glass fiber cloth 4; the cleaning part 1004 is rotatably connected with two cleaning rollers 102, and the cleaning rollers 102 are located outside the ring formed by the winding of the glass fiber cloth 4, and all the cleaning rollers 102 correspond to the positions of the water spray plate 101; the cleaning part 1004 is fixedly connected with two motors II 103, and the output shaft of the motor II 103 is fixedly connected with the adjacent cleaning roller 102.

[0020] The glass fiber cloth 4 is provided with a plurality of through holes, so as to facilitate the sewage to pass through the glass fiber cloth 4 and avoid affecting the flow of the sewage.

[0021] The circulation port 1005 on the left is provided with a shunt pipe 1002, and the shunt pipe 1002 is connected with the circulation port 1005 on the left; a water spray port is provided on the inner upper side surface of the cultivation frame 5, and the upper part of the cultivation frame 5 is set to be hollow, and the shunt pipe 1002 is connected with the upper part of the cultivation frame 5, and the inner lower side surface of the cultivation frame 5 is set to be inclined to the lower left, and the cultivation frame 5 is provided with a plurality of discharge ports at the left end.

[0022] An inlet 5001 is provided at the right end of the cultivation frame 5, and an outlet 5002 is provided at the left end of the cultivation frame 5, and the inlet 5001 is in contact with the glass fiber cloth 4, and the width of the outlet 5002 is greater than the thickness of the glass fiber cloth 4, so as to prevent the outlet 5002 from scraping off the biofilm cultivated on the glass fiber cloth 4.

[0023] It also includes guide blocks 201; a plurality of guide blocks 201 are arranged on the front and rear sides of the glass fiber cloth 4; and the guide wheel Ⅰ3 is provided with a guide portion 3001, and the diameter of the guide portion 3001 is greater than the diameter of the middle portion of the guide wheel Ⅰ3.

[0024] It also includes a baffle 202; twelve baffles 202 are fixedly connected to the sewage purification tank 1, and the baffles 202 are all located between the glass fiber cloth 4 and the sewage purification tank 1, and the baffles 202 are in contact with the glass fiber cloth 4, and the baffles 202 block the sewage from flowing out from between the glass fiber cloth 4 and the sewage purification tank 1, resulting in a reduction in the sewage purification effect of the glass fiber cloth 4.

[0025] The working steps of the above embodiment are: first, the bio-based conveying device connected to the microorganism inoculation plate 5003 is used to input the bio-based material to the microorganism inoculation plate 5003 shaft, and then the bio-based material flows onto the glass fiber cloth 4 through the microorganism inoculation plate 5003, so that the glass fiber cloth 4 is inoculated with microorganisms for sewage purification, and at the same time, the motor I6 is controlled to drive the rotating wheel 2 to rotate. Since the rotating wheel 2 is in contact with the glass fiber cloth 4, the rotating wheel 2 will drive the glass fiber cloth 4 to rotate counterclockwise from the front to the back. When the glass fiber cloth 4 rotates, the rotation of the glass fiber cloth 4 is guided and restricted by the guide wheel I3. Then, after the glass fiber cloth 4 rotates for one circle, the glass fiber cloth 4 is inoculated with microorganisms, and then the motor I6 stops rotating; then the staff connects the water inlet 1001 with the sewage conveying device through a water pipe, and then inputs sewage to the water inlet 1001 through the sewage conveying device. The sewage enters the sewage purification tank 1 from the water inlet 1001. When the sewage in the sewage purification tank 1 submerges all the guide wheels I3, the sewage conveying device Stop conveying sewage, then microorganisms begin to decompose organic matter and nutrients in the sewage, thereby purifying the sewage and multiplying on the glass fiber cloth 4 to form a biofilm; after the sewage conveying device stops conveying sewage, the drainage port and the water inlet of the external circulation pump are respectively connected to the circulation port 1005 at both ends of the sewage purification tank 1, and then the circulation pump is controlled to start, so that the sewage begins to circulate in the sewage purification tank 1, thereby increasing the comprehensiveness of the contact between the sewage and the microorganisms and improving the purification of the sewage; and the glass fiber cloth 4 is distributed in the sewage purification tank 1 in a W shape, so that the sewage needs to pass through the glass fiber cloth 4 many times during the circulation process, further enhancing the comprehensiveness of the contact between the sewage and the microorganisms; but since the microorganisms on the glass fiber cloth 4 are added for the first time at this time, the adhesion between the microorganisms and the glass fiber cloth 4 is low at this time, resulting in the water flow that circulates under the influence of the circulation pump will impact and separate the microorganisms from the glass fiber cloth 4, so that a gap in the microbial layer is formed on the glass fiber cloth 4, resulting in a poor initial microbial purification effect of the sewage purification tank 1.

[0026] Therefore, in the process of sewage circulation and glass fiber cloth 4 purifying the sewage in sewage purification tank 1, part of the sewage flows into the shunt pipe 1002 through the circulation port 1005, and then this part of the sewage flows into the cultivation frame 5 from the shunt pipe 1002, and then is sprayed onto the glass fiber cloth 4 from the water spray port at the upper end of the cultivation frame 5, so that the microorganisms on the glass fiber cloth 4 in the cultivation frame 5 absorb the organic matter and nutrients in the sewage and begin to multiply rapidly; and by spraying sewage onto the glass fiber cloth 4 in the cultivation frame 5, organic matter and nutrients are provided to the newly added microorganisms on the glass fiber cloth 4, so that the newly added microorganisms on the glass fiber cloth 4 in the cultivation frame 5 are subjected to extremely low water flow impact, thereby avoiding the microorganisms in the sewage purification tank 1 being affected by the water flow in the sewage purification tank 1, resulting in some The problem of microorganisms being washed away is solved; subsequently, the sewage sprayed between the inlet 5001 and the outlet 5002 will drip downward from the glass fiber cloth 4 in the cultivation frame 5 to the inner lower side surface of the cultivation frame 5, and since the inner lower side surface of the cultivation frame 5 is set to an inclined state, the dripping sewage will gather at the left end of the cultivation frame 5, and then flow out from the discharge port of the cultivation frame 5, and then pass through the glass fiber cloth 4 located in the sewage purification tank 1 and flow back to the left end of the sewage purification tank 1, thereby following the flow of sewage in the sewage purification tank 1 again, and the sewage sprayed on the left side of the outlet 5002 will directly drip from the glass fiber cloth 4 back to the left end of the sewage purification tank 1, so that the sewage flowing into the cultivation frame 5 through the shunt pipe 1002 can cultivate the microorganisms on the glass fiber cloth 4 in the cultivation frame 5 while improving the sewage treatment effect.

[0027] When biofilm is formed on the glass fiber cloth 4 below the inlet 5001 to the outlet 5002, the glass fiber cloth 4 in the sewage purification tank 1 also forms a biofilm. At this time, the motor Ⅰ6 is controlled to drive the rotating wheel 2 to rotate, so that the glass fiber cloth 4 rotates counterclockwise again. When all the glass fiber cloths 4 in the cultivation frame 5 rotate out of the outlet 5002, the motor Ⅰ6 stops rotating. Since the length of the glass fiber cloth 4 below the inlet 5001 to the outlet 5002 is equal to the length of the glass fiber cloth 4 between the two adjacent guide wheels Ⅰ3 above, after the glass fiber cloth 4 rotates counterclockwise, the glass fiber cloth 4 originally between the inlet 5001 and the outlet 5002 is rotated counterclockwise. The glass fiber cloth 4 on the right side will rotate to between the two adjacent guide wheels Ⅰ3 on the upper left, and the glass fiber cloth 4 between the two adjacent guide wheels Ⅰ3 on the upper right will rotate to the rotating wheel 2, and the glass fiber cloth 4 originally located at the rotating wheel 2 will rotate into the cultivation frame 5. Since a biofilm has been formed on the glass fiber cloth 4 rotated to between the two adjacent guide wheels Ⅰ3 on the upper left, the adhesion between the microorganisms and the glass fiber cloth 4 is relatively large. At this time, the microorganisms on the glass fiber cloth 4 rotated to between the two adjacent guide wheels Ⅰ3 on the upper left will not be washed away by the water flow, forming a gap in the microbial layer, which has a better sewage purification effect; then after a period of time After a period of time, a biofilm is formed again on the glass fiber cloth 4 from the entrance 5001 to the bottom of the outlet 5002, and the microorganisms that have formed a biofilm on the glass fiber cloth 4 in the sewage purification tank 1 will further multiply, and then the motor Ⅰ6 is controlled again to drive the glass fiber cloth 4 to rotate counterclockwise, so that the glass fiber cloth 4 from the entrance 5001 to the bottom of the outlet 5002 rotates to between the two adjacent guide wheels Ⅰ3 on the upper left for the second time, and the glass fiber cloth 4 between the two adjacent guide wheels Ⅰ3 on the upper right will rotate to the rotating wheel 2 again, and the biofilm on the glass fiber cloth 4 between the two adjacent guide wheels Ⅰ3 in the upper middle and upper right is in a further After the reproduction, the biofilm on the glass fiber cloth 4 between the two adjacent guide wheels Ⅰ3 in the upper left corner is thicker; after a period of time, the glass fiber cloth 4 below the entrance 5001 to the exit 5002 rotates to between the two adjacent guide wheels Ⅰ3 in the upper left corner for the third time, and the biofilm on the glass fiber cloth 4 originally between the two adjacent guide wheels Ⅰ3 in the upper left corner and the middle corner will rotate to between the two adjacent guide wheels Ⅰ3 in the middle corner and the upper right corner, and the corresponding biofilm on the glass fiber cloth 4 will further reproduce, so that the biofilm on the glass fiber cloth 4 in the sewage purification tank 1 will be gradually thickened from left to right;Then after a period of time, the glass fiber cloth 4 between the inlet 5001 and the outlet 5002 rotates to the upper left between the two adjacent guide wheels Ⅰ3 for the fourth time, and the glass fiber cloth 4 originally located between the upper right between the two adjacent guide wheels Ⅰ3 with the longest breeding time and the thickest biofilm rotates to the rotating wheel 2, so that each time the glass fiber cloth 4 newly enters the sewage purification tank 1, it will have a better sewage purification effect, avoiding the problem in the prior art that the soft film substrate of newly added microorganisms cannot achieve the purification effect after the biofilm is formed, so that the sewage purification effect is poor during the period from the newly added microorganisms to the formation of the biofilm, resulting in a longer time for sewage purification. ;

[0028] Each time when the glass fiber cloth 4 between the two adjacent guide wheels Ⅰ3 on the upper right rotates to the rotating wheel 2, water is input into the water spray plate 101 through a water pump connected to the water spray plate 101, and then water is sprayed out from the high-pressure nozzle on the water spray plate 101, so that the microorganisms on the glass fiber cloth 4 rotating to the water spray plate 101 are washed to the outside of the glass fiber cloth 4, and the cleaning roller 102 is driven to rotate by the motor Ⅱ 103, so that the biofilm on the outside of the glass fiber cloth 4 is swept down by the bristles on the cleaning roller 102, which is conducive to the subsequent addition of new microorganisms on the glass fiber cloth 4, which is then cleaned. The processed microorganisms and water will be discharged from the drain outlet of the cleaning section 1004; at the same time, the glass fiber cloth 4 originally at the rotating wheel 2 will be rotated into the cultivation frame 5, and then the bio-based conveying device connected to the microorganism inoculation plate 5003 will be used to input the bio-based material into the microorganism inoculation plate 5003 axis, so that the glass fiber cloth 4 newly entering the cultivation frame 5 will be inoculated with microorganisms each time, and in the subsequent sewage circulation process, the microorganisms inoculated on the glass fiber cloth 4 newly entering the cultivation frame 5 will be cultivated for subsequent rotation to the sewage purification tank 1 for purification.

[0029] Subsequently, when the glass fiber cloth 4 in the cultivation frame 5 forms a biofilm again, the motor Ⅰ6 is controlled again to drive the rotating wheel 2 to rotate, so that the glass fiber cloth 4 in the cultivation frame 5 is rotated into the sewage purification tank 1 again, and so on; the glass fiber cloth 4 in the sewage purification tank 1 is constantly replaced by the glass fiber cloth 4 in the cultivation frame 5, and the reproduction time between the two adjacent guide wheels Ⅰ3 in the upper right corner is the longest. The glass fiber cloth 4 with the thickest biofilm is rotated to the rotating wheel 2 for cleaning, so that the microorganisms on this part of the glass fiber cloth 4 no longer continue to reproduce, avoiding the problem that after the microorganisms on the glass fiber cloth 4 reproduce for a long time, the biofilm gradually thickens, resulting in hypoxia of the internal microorganisms, causing the microorganisms to age and die, resulting in reduced purification effect of the biofilm.

[0030] Since the glass fiber cloth 4 is distributed in the sewage purification tank 1 in a W shape, the glass fiber cloth 4 needs to be guided by the guide wheel Ⅰ3 and the guide wheel Ⅱ7, so that the glass fiber cloth 4 will pass through the guide wheel Ⅰ3 and the guide wheel Ⅱ7 when moving. If the guide wheel Ⅰ3 and the guide wheel Ⅱ7 directly guide the glass fiber cloth 4, the biofilm attached to the glass fiber cloth 4 will be contacted and squeezed by the guide wheel Ⅰ3 and the guide wheel Ⅱ7, causing part of the biofilm on the glass fiber cloth 4 to fall off, thereby reducing the biofilm and reducing the purification effect of the biofilm on the glass fiber cloth 4 on sewage; therefore, the guide block 201 is guided by the guide parts 3001 at both ends of the guide wheel Ⅰ3, and then the glass fiber cloth 4 is guided by the guide block 201, so that the guide wheel Ⅰ3 does not need to contact the glass fiber cloth 4, thereby avoiding the problem that the guide wheel Ⅰ3 squeezes the glass fiber cloth 4, causing part of the biofilm on the glass fiber cloth 4 to fall off, reducing the biofilm, and reducing the purification effect of the biofilm on the glass fiber cloth 4 on sewage.

[0031] The content of organic matter and nutrients in the sewage is detected by the water quality detector at the right end of the sewage purification tank 1. When it is detected that the content of organic matter and nutrients in the sewage reaches the discharge standard, the water pump connected to the water outlet 1003 is started, so that the sewage in the sewage purification tank 1 is sucked away by the water pump. When the sewage in the sewage purification tank 1 is completely sucked away, new sewage is input to the water inlet 1001 through the sewage conveying device, and this cycle is repeated to achieve the sewage purification operation.

[0032] Example 2 On the basis of Example 1, Figure 5 and Figure 7 As shown, it also includes a rubber strip 301 and a scraper 302; the guide block 201 is provided with a toggle portion 20101; the sewage purification tank 1 is slidably connected to the rubber strip 301, and the rubber strip 301 is provided with a plurality of grooves; the right end of the sewage purification tank 1 is fixedly connected to the scraper 302, and the scraper 302 is in contact with the rubber strip 301, and the scraper 302 is set to be hollow, and the scraper 302 is connected to an external suction device.

[0033] The lower end of the scraper 302 is set to a sharp angle, so as to reduce the contact area between the scraper 302 and the rubber strip 301 and reduce the wear of the rubber strip 301 on the scraper 302.

[0034] It also includes a partition 303; the sewage purification tank 1 is fixedly connected to the partition 303, and the partition 303 is located between the scraper 302 and the water outlet 1003. The water outlet 1003 is separated from the scraper 302 by the partition 303 to prevent sludge from drifting to the water outlet 1003, resulting in reduced water quality discharged from the water outlet 1003.

[0035] The working steps of the above embodiment are: in the process of sewage purification, due to the metabolic products of microorganisms and suspended matter in the water, a layer of sludge will be formed at the bottom of the sewage purification tank 1. Therefore, after a period of sewage purification, the staff needs to clean the bottom of the sewage purification tank 1. Cleaning the bottom of the sewage purification tank 1 requires disassembling most of the parts in the sewage purification tank 1, which makes it difficult for the staff to clean. Therefore, the metabolic products of microorganisms and suspended matter in the water are received by the upper side of the rubber strip 301, so that a layer of sludge is formed on the upper side of the rubber strip 301. Then, during the rotation of the glass fiber cloth 4, when the guide block 201 rotates to the bottom of the glass fiber cloth 4, the toggle part 20101 will be inserted into the groove on the rubber strip 301, so that the toggle part 20101 can be used to remove the suspended matter in the water. 0101 Move the rubber strip 301 to rotate, so that the upper side of the rubber strip 301 moves to the right. During the process of the upper side of the rubber strip 301 moving to the right, since the scraper 302 is in contact with the upper side of the rubber strip 301, the scraper 302 will block the sludge on the upper end of the rubber strip 301, preventing the sludge on the rubber strip 301 from rotating to the lower side of the rubber strip 301, and causing the sludge to gather on the left side of the scraper 302. Then, an air pump connected to the scraper 302 is used to suck air into the scraper 302, so that the sludge on the left side of the scraper 302 is sucked away through the suction groove on the left side of the scraper 302, thereby completing the sludge cleaning, thereby avoiding the problem that the staff needs to disassemble most of the parts in the sewage purification tank 1 to clean the bottom of the sewage purification tank 1, which makes it difficult for the staff to clean.

[0036] During the process of the scraper 302 cleaning the sludge, affected by the flow of sewage, part of the sludge will float in the water, and part of the sludge will float to the water outlet 1003, resulting in reduced water quality discharged from the water outlet 1003. Therefore, the water outlet 1003 is separated from the scraper 302 by the partition 303 to prevent the sludge from floating to the water outlet 1003, resulting in reduced water quality discharged from the water outlet 1003.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A biofilm-based sewage purifier, comprising a sewage purification tank (1); the sewage purification tank (1) is provided with a water inlet (1001), and the water inlet (1001) is connected to an external sewage conveying device, the sewage purification tank (1) is provided with a water outlet (1003), and the water outlet (1003) is connected to an external water pump, the sewage purification tank (1) is provided with two circulation ports (1005), and the two circulation ports (1005) are respectively connected to the drainage port and the water inlet of the circulation pump, and a water quality detector is provided at the right end of the sewage purification tank (1); It is characterized in that The invention also comprises a rotating wheel (2), a guide wheel I (3), a glass fiber cloth (4), a cultivation frame (5), a motor I (6), a guide wheel II (7) and a cleaning component; the sewage purification tank (1) is rotatably connected to the rotating wheel (2); the sewage purification tank (1) is fixedly connected to the motor I (6), and the output shaft of the motor I (6) is fixedly connected to the rotating wheel (2); the sewage purification tank (1) is rotatably connected to a plurality of guide wheels I (3), and all the guide wheels I (3) are distributed in a W shape; the sewage purification tank (1) is rotatably connected to the guide wheel II (7); all the rotating wheels (2), the guide wheels I (3) and the guide wheels II (7) are commonly wound with the glass fiber cloth (4); the sewage purification tank (1) is fixedly connected to the cultivation frame (5), and the glass fiber cloth (4) passes through the cultivation frame (5); and the sewage purification tank (1) is connected to the cleaning component.

2. A sewage purifier based on a biofilm method according to claim 1, It is characterized in that The cleaning assembly comprises a water spray plate (101), a cleaning roller (102) and a motor II (103); the sewage purification tank (1) is provided with a cleaning part (1004), and the cleaning part (1004) is provided with a drainage port; the cleaning part (1004) is fixedly connected to the water spray plate (101), and the upper and lower ends of the water spray plate (101) are both provided with a plurality of high-pressure nozzles, and the water spray plate (101) is connected to an external water pump, and the water spray plate (101) is in a glass fiber The cleaning portion (1004) is rotatably connected to a plurality of cleaning rollers (102), and the cleaning rollers (102) are located outside the ring formed by the glass fiber cloth (4), and the positions of all the cleaning rollers (102) and the water spray plate (101) correspond; the cleaning portion (1004) is fixedly connected to a plurality of motors II (103), and the output shafts of the motors II (103) are fixedly connected to adjacent cleaning rollers (102).

3. A sewage purifier based on a biofilm method according to claim 2, It is characterized in that The glass fiber cloth (4) is provided with a plurality of through holes.

4. A sewage purifier based on a biofilm method according to claim 1, It is characterized in that The circulation port (1005) on the left is provided with a shunt pipe (1002), and the shunt pipe (1002) is connected to the circulation port (1005) on the left; a water spray port is provided at the upper end of the cultivation frame (5), and the cultivation frame (5) is provided with a hollow shape, and the shunt pipe (1002) is connected to the cultivation frame (5), and the inner lower side surface of the cultivation frame (5) is provided to be inclined toward the lower left, and the cultivation frame (5) is provided with a plurality of discharge ports at the left end.

5. A wastewater purifier based on a biofilm method according to claim 4, It is characterized in that An inlet (5001) is provided at the right end of the cultivation frame (5), and an outlet (5002) is provided at the left end of the cultivation frame (5), and the inlet (5001) is in contact with the glass fiber cloth (4), and the width of the outlet (5002) is greater than the thickness of the glass fiber cloth (4).

6. A wastewater purifier based on a biofilm method according to claim 1, It is characterized in that It also includes a guide block (201); a plurality of guide blocks (201) are arranged on the front and rear sides of the glass fiber cloth (4); and the guide wheel I (3) is provided with a guide portion (3001), and the diameter of the guide portion (3001) is greater than the diameter of the middle portion of the guide wheel I (3).

7. A wastewater purifier based on a biofilm method according to claim 6, It is characterized in that It also includes a baffle (202); a plurality of baffles (202) are fixedly connected to the sewage purification tank (1), and the baffles (202) are all located between the glass fiber cloth (4) and the sewage purification tank (1), and the baffles (202) are in contact with the glass fiber cloth (4).

8. A wastewater purifier based on a biofilm method according to claim 6, It is characterized in that It also comprises a rubber strip (301) and a scraper (302); the guide block (201) is provided with a toggle portion (20101); the sewage purification tank (1) is slidably connected to the rubber strip (301), and the rubber strip (301) is provided with a plurality of grooves; the right end of the sewage purification tank (1) is fixedly connected to the scraper (302), the scraper (302) is in contact with the rubber strip (301), the scraper (302) is arranged to be hollow, and the scraper (302) is connected to an external air suction device.

9. A wastewater purifier based on a biofilm method according to claim 8, It is characterized in that The lower end of the scraper (302) is configured to be a sharp angle.

10. A wastewater purifier based on a biofilm method according to claim 8, It is characterized in that It also includes a partition (303); the partition (303) is fixedly connected to the sewage purification tank (1), and the partition (303) is located between the scraper (302) and the water outlet (1003).

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